Created by the Murano glass artist Maestro Mario Costantini who started learning his craft at the age of eleven. The Calcedonia technique, which uses silver nitrate to create unpredictable striations making each piece a true one of a kind work of art, is thought to be one of the oldest, and rarest types of glass. Developed in Murano during the fifteenth century, the technique was lost only to be rediscovered centuries later. Signed by the maestro.
The Venetian island of Murano has been home to some of the world's most famous glass studios since the 13th century. Because of the risk of fire, the Venetian government moved all glass studios from the center city to this island where techniques flourished and evolved for more than 700 years in a concentrated community of highly skilled artists. During the Renaissance, Venetian glass was so essential to the economy that glassmakers were forbidden to communicate their techniques to anyone outside of their guild. Some of the original 13th century kilns are still in use today at studios that have passed from maestro to apprentice for centuries.